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rtt-f030/bsp/stm32f7-disco/drivers/drv_sdram.c

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[bsp]add the stm32f74x bsp.
2015-08-07 13:30:13 +08:00
/*
* File : drv_sdram.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2015 RT-Thread Develop Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2015-08-03 xiaonong The first version for STM32F7
*/
#include "drv_sdram.h"
static SDRAM_HandleTypeDef sdramHandle;
static FMC_SDRAM_TimingTypeDef Timing;
static FMC_SDRAM_CommandTypeDef Command;
/**
* @brief Initializes SDRAM MSP.
* @param hsdram: SDRAM handle
* @param Params
* @retval None
*/
static void SDRAM_MspInit(SDRAM_HandleTypeDef *hsdram, void *Params)
{
static DMA_HandleTypeDef dma_handle;
GPIO_InitTypeDef gpio_init_structure;
/* Enable FMC clock */
__HAL_RCC_FMC_CLK_ENABLE();
/* Enable chosen DMAx clock */
SDRAM_DMA_CLK_ENABLE();
/* Enable GPIOs clock */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
__HAL_RCC_GPIOE_CLK_ENABLE();
__HAL_RCC_GPIOF_CLK_ENABLE();
__HAL_RCC_GPIOG_CLK_ENABLE();
__HAL_RCC_GPIOH_CLK_ENABLE();
/* Common GPIO configuration */
gpio_init_structure.Mode = GPIO_MODE_AF_PP;
gpio_init_structure.Pull = GPIO_PULLUP;
gpio_init_structure.Speed = GPIO_SPEED_FAST;
gpio_init_structure.Alternate = GPIO_AF12_FMC;
/* GPIOC configuration */
gpio_init_structure.Pin = GPIO_PIN_3;
HAL_GPIO_Init(GPIOC, &gpio_init_structure);
/* GPIOD configuration */
gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_3 | GPIO_PIN_8 | GPIO_PIN_9 |
GPIO_PIN_10 | GPIO_PIN_14 | GPIO_PIN_15;
HAL_GPIO_Init(GPIOD, &gpio_init_structure);
/* GPIOE configuration */
gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_7| GPIO_PIN_8 | GPIO_PIN_9 |\
GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 |\
GPIO_PIN_15;
HAL_GPIO_Init(GPIOE, &gpio_init_structure);
/* GPIOF configuration */
gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2| GPIO_PIN_3 | GPIO_PIN_4 |\
GPIO_PIN_5 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 |\
GPIO_PIN_15;
HAL_GPIO_Init(GPIOF, &gpio_init_structure);
/* GPIOG configuration */
gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4| GPIO_PIN_5 | GPIO_PIN_8 |\
GPIO_PIN_15;
HAL_GPIO_Init(GPIOG, &gpio_init_structure);
/* GPIOH configuration */
gpio_init_structure.Pin = GPIO_PIN_3 | GPIO_PIN_5;
HAL_GPIO_Init(GPIOH, &gpio_init_structure);
/* Configure common DMA parameters */
dma_handle.Init.Channel = SDRAM_DMA_CHANNEL;
dma_handle.Init.Direction = DMA_MEMORY_TO_MEMORY;
dma_handle.Init.PeriphInc = DMA_PINC_ENABLE;
dma_handle.Init.MemInc = DMA_MINC_ENABLE;
dma_handle.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
dma_handle.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
dma_handle.Init.Mode = DMA_NORMAL;
dma_handle.Init.Priority = DMA_PRIORITY_HIGH;
dma_handle.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
dma_handle.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
dma_handle.Init.MemBurst = DMA_MBURST_SINGLE;
dma_handle.Init.PeriphBurst = DMA_PBURST_SINGLE;
dma_handle.Instance = SDRAM_DMA_STREAM;
/* Associate the DMA handle */
__HAL_LINKDMA(hsdram, hdma, dma_handle);
/* Deinitialize the stream for new transfer */
HAL_DMA_DeInit(&dma_handle);
/* Configure the DMA stream */
HAL_DMA_Init(&dma_handle);
/* NVIC configuration for DMA transfer complete interrupt */
HAL_NVIC_SetPriority(SDRAM_DMA_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(SDRAM_DMA_IRQn);
}
/**
* @brief DeInitializes SDRAM MSP.
* @param hsdram: SDRAM handle
* @param Params
* @retval None
*/
static void SDRAM_MspDeInit(SDRAM_HandleTypeDef *hsdram, void *Params)
{
static DMA_HandleTypeDef dma_handle;
/* Disable NVIC configuration for DMA interrupt */
HAL_NVIC_DisableIRQ(SDRAM_DMA_IRQn);
/* Deinitialize the stream for new transfer */
dma_handle.Instance = SDRAM_DMA_STREAM;
HAL_DMA_DeInit(&dma_handle);
/* GPIO pins clock, FMC clock and DMA clock can be shut down in the applications
by surcharging this __weak function */
}
/**
* @brief Programs the SDRAM device.
* @param RefreshCount: SDRAM refresh counter value
* @retval None
*/
static void SDRAM_InitializationSequence(uint32_t RefreshCount)
{
__IO uint32_t tmpmrd = 0;
/* Step 1: Configure a clock configuration enable command */
Command.CommandMode = FMC_SDRAM_CMD_CLK_ENABLE;
Command.CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
Command.AutoRefreshNumber = 1;
Command.ModeRegisterDefinition = 0;
/* Send the command */
HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT);
/* Step 2: Insert 100 us minimum delay */
/* Inserted delay is equal to 1 ms due to systick time base unit (ms) */
HAL_Delay(1);
/* Step 3: Configure a PALL (precharge all) command */
Command.CommandMode = FMC_SDRAM_CMD_PALL;
Command.CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
Command.AutoRefreshNumber = 1;
Command.ModeRegisterDefinition = 0;
/* Send the command */
HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT);
/* Step 4: Configure an Auto Refresh command */
Command.CommandMode = FMC_SDRAM_CMD_AUTOREFRESH_MODE;
Command.CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
Command.AutoRefreshNumber = 8;
Command.ModeRegisterDefinition = 0;
/* Send the command */
HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT);
/* Step 5: Program the external memory mode register */
tmpmrd = (uint32_t)SDRAM_MODEREG_BURST_LENGTH_1 |\
SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL |\
SDRAM_MODEREG_CAS_LATENCY_2 |\
SDRAM_MODEREG_OPERATING_MODE_STANDARD |\
SDRAM_MODEREG_WRITEBURST_MODE_SINGLE;
Command.CommandMode = FMC_SDRAM_CMD_LOAD_MODE;
Command.CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
Command.AutoRefreshNumber = 1;
Command.ModeRegisterDefinition = tmpmrd;
/* Send the command */
HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT);
/* Step 6: Set the refresh rate counter */
/* Set the device refresh rate */
HAL_SDRAM_ProgramRefreshRate(&sdramHandle, RefreshCount);
}
/**
* @brief Reads an amount of data from the SDRAM memory in polling mode.
* @param uwStartAddress: Read start address
* @param pData: Pointer to data to be read
* @param uwDataSize: Size of read data from the memory
* @retval SDRAM status
*/
rt_err_t SDRAM_ReadData(uint32_t Address, uint32_t *Data, uint32_t DataSize)
{
if(HAL_SDRAM_Read_32b(&sdramHandle, (uint32_t *)Address, Data, DataSize) != HAL_OK)
{
return RT_ERROR;
}
else
{
return RT_EOK;
}
}
/**
* @brief Reads an amount of data from the SDRAM memory in DMA mode.
* @param uwStartAddress: Read start address
* @param pData: Pointer to data to be read
* @param uwDataSize: Size of read data from the memory
* @retval SDRAM status
*/
rt_err_t SDRAM_ReadDataDMA(uint32_t Address, uint32_t *Data, uint32_t DataSize)
{
if(HAL_SDRAM_Read_DMA(&sdramHandle, (uint32_t *)Address, Data, DataSize) != HAL_OK)
{
return RT_ERROR;
}
else
{
return RT_EOK;
}
}
/**
* @brief Writes an amount of data to the SDRAM memory in polling mode.
* @param uwStartAddress: Write start address
* @param pData: Pointer to data to be written
* @param uwDataSize: Size of written data from the memory
* @retval SDRAM status
*/
rt_err_t SDRAM_WriteData(uint32_t Address, uint32_t *Data, uint32_t DataSize)
{
if(HAL_SDRAM_Write_32b(&sdramHandle, (uint32_t *)Address, Data, DataSize) != HAL_OK)
{
return RT_ERROR;
}
else
{
return RT_EOK;
}
}
/**
* @brief Writes an amount of data to the SDRAM memory in DMA mode.
* @param Address: Write start address
* @param Data: Pointer to data to be written
* @param DataSize: Size of written data from the memory
* @retval SDRAM status
*/
rt_err_t SDRAM_WriteDataDMA(uint32_t Address, uint32_t *Data, uint32_t DataSize)
{
if(HAL_SDRAM_Write_DMA(&sdramHandle, (uint32_t *)Address, Data, DataSize) != HAL_OK)
{
return RT_ERROR;
}
else
{
return RT_EOK;
}
}
/**
* @brief Initializes the SDRAM device.
* @retval SDRAM status
*/
rt_err_t sdram_hw_init(void)
{
static uint8_t sdramstatus = RT_ERROR;
/* SDRAM device configuration */
sdramHandle.Instance = FMC_SDRAM_DEVICE;
/* Timing configuration for 100Mhz as SD clock frequency (System clock is up to 200Mhz) */
Timing.LoadToActiveDelay = 2;
Timing.ExitSelfRefreshDelay = 7;
Timing.SelfRefreshTime = 4;
Timing.RowCycleDelay = 7;
Timing.WriteRecoveryTime = 2;
Timing.RPDelay = 2;
Timing.RCDDelay = 2;
sdramHandle.Init.SDBank = FMC_SDRAM_BANK1;
sdramHandle.Init.ColumnBitsNumber = FMC_SDRAM_COLUMN_BITS_NUM_8;
sdramHandle.Init.RowBitsNumber = FMC_SDRAM_ROW_BITS_NUM_12;
sdramHandle.Init.MemoryDataWidth = SDRAM_MEMORY_WIDTH;
sdramHandle.Init.InternalBankNumber = FMC_SDRAM_INTERN_BANKS_NUM_4;
sdramHandle.Init.CASLatency = FMC_SDRAM_CAS_LATENCY_2;
sdramHandle.Init.WriteProtection = FMC_SDRAM_WRITE_PROTECTION_DISABLE;
sdramHandle.Init.SDClockPeriod = SDCLOCK_PERIOD;
sdramHandle.Init.ReadBurst = FMC_SDRAM_RBURST_ENABLE;
sdramHandle.Init.ReadPipeDelay = FMC_SDRAM_RPIPE_DELAY_0;
/* SDRAM controller initialization */
SDRAM_MspInit(&sdramHandle, NULL); /* __weak function can be rewritten by the application */
if(HAL_SDRAM_Init(&sdramHandle, &Timing) != HAL_OK)
{
sdramstatus = RT_ERROR;
}
else
{
sdramstatus = RT_EOK;
}
/* SDRAM initialization sequence */
SDRAM_InitializationSequence(REFRESH_COUNT);
return sdramstatus;
}
/**
* @brief DeInitializes the SDRAM device.
* @retval SDRAM status
*/
rt_err_t sdram_hw_deinit(void)
{
static uint8_t sdramstatus = RT_ERROR;
/* SDRAM device de-initialization */
sdramHandle.Instance = FMC_SDRAM_DEVICE;
if(HAL_SDRAM_DeInit(&sdramHandle) != HAL_OK)
{
sdramstatus = RT_ERROR;
}
else
{
sdramstatus = RT_EOK;
}
/* SDRAM controller de-initialization */
SDRAM_MspDeInit(&sdramHandle, NULL);
return sdramstatus;
}
/**
* @brief Handles SDRAM DMA transfer interrupt request.
* @retval None
*/
void SDRAM_DMA_IRQHandler(void)
{
HAL_DMA_IRQHandler(sdramHandle.hdma);
}
#ifdef RT_USING_FINSH
#include <finsh.h>
int sdram_test(void)
{
uint32_t i;
volatile uint32_t *wr_ptr;
volatile uint8_t *char_wr_ptr;
volatile uint16_t *short_wr_ptr;
/* initialize memory */
rt_kprintf("SDRAM<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>...\r\n");
wr_ptr = (uint32_t *)SDRAM_DEVICE_ADDR;
char_wr_ptr = (uint8_t *)wr_ptr;
/* <20><><EFBFBD><EFBFBD>8λ<38><CEBB><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/
rt_kprintf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD>SDRAM<EFBFBD><EFBFBD><EFBFBD><EFBFBD>...\r\n");
for (i = 0; i < SDRAM_DEVICE_SIZE / 4; i++)
{
*wr_ptr++ = 0x00; //д<><D0B4>0x00
}
/* 8 bit write */
rt_kprintf("д<EFBFBD><EFBFBD>8λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>...\r\n");
for (i = 0; i < SDRAM_DEVICE_SIZE / 4; i++)
{
*char_wr_ptr++ = 0x11;
*char_wr_ptr++ = 0x22;
*char_wr_ptr++ = 0x33;
*char_wr_ptr++ = 0x44;
}
/* У<><D0A3>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/
rt_kprintf("У<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>...\r\n");
wr_ptr = (uint32_t *)SDRAM_DEVICE_ADDR;
for (i = 0; i < SDRAM_DEVICE_SIZE / 8; i++)
{
if (*wr_ptr != 0x44332211) /* be aware of endianess */
{
/* byte comparison failure */
rt_kprintf("У<EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>!\r\n");
return 1; /* fatal error */
}
wr_ptr++;
}
/* byte comparison succeed. */
rt_kprintf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>16λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD>...\r\n");
wr_ptr = (uint32_t *)SDRAM_DEVICE_ADDR;
short_wr_ptr = (uint16_t *)wr_ptr;
/* Clear content before 16 bit access test */
rt_kprintf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD>SDRAM<EFBFBD>е<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>...\r\n");
for (i = 0; i < SDRAM_DEVICE_SIZE / 4; i++)
{
*wr_ptr++ = 0;
}
/* 16 bit write */
rt_kprintf("д<EFBFBD><EFBFBD>16λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>...\r\n");
for (i = 0; i < (SDRAM_DEVICE_SIZE / 4); i++)
{
*short_wr_ptr++ = 0x5AA5;
*short_wr_ptr++ = 0xAA55;
}
/* Verifying */
wr_ptr = (uint32_t *)SDRAM_DEVICE_ADDR;
//wr_ptr -= SDRAM_BASE_ADDR/4;
for (i = 0; i < SDRAM_DEVICE_SIZE / 4; i++)
{
if (*wr_ptr != 0xAA555AA5) /* be aware of endianess */
{
/* 16-bit half word failure */
rt_kprintf("У<EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>!\r\n");
return 1; /* fatal error */
}
wr_ptr++;
}
/* 16-bit half word comparison succeed. */
rt_kprintf("У<EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϣ<EFBFBD>\r\n");
return 0;
}
FINSH_FUNCTION_EXPORT(sdram_test, SDRAM read write test)
#endif